Kohler engine surging at idle

1219 posts · Joined 2011. #1 · May 28, 2023. I have the original M20 on my mid 90's 20G. It has the Walbro adjustable carb. A few months ago it started randomly surging under load so I put on an electric fuel pump for fun and replaced all the fuel hose and the filter. In-tank filter was clean but I cleaned it out with acetone anyway.

Kohler engine surging at idle. 3. Excessive Engine Vibration. If you notice excessive vibration coming from your Kohler 7000 Series engine, consider the following troubleshooting steps: Check for Loose or Damaged Parts: Inspect the engine components, including the flywheel, blades, and mounting bolts, for any signs of looseness or damage.

Im having the exact same issue and need some advice on next steps. What I've done so far is as follows: 1. Replaced all fuel lines with new lines and new hose clamps. 2. Replaced the fuel filter with a new one. 3. Replaced the accelerator pump diaphram with a new one. 4. replaced the fuel pump with a new one.

When fixing surging Kohler lawn mower engines, you will need tools and supplies such as a low idle adjustment screw, air filter, heat shield, governor, aftermarket carburetor, gasket, intake port insert, valve cover gasket, carburetor replacement, and carburetor cleaner. ... A Kohler lawn mower engine may surge due to a blocked idle jet or an ...Once the engine warms up and at full throttle the surging is still noticeable. Surging is generally indicative of a lean fuel condition. Be sure there are no air leaks at the intake manifold. The easiest way to check this is to spray Wd40 (or similar) around the intake manifold while the engine is running.Apr 2, 2013 / Scag turf tiger/ Kohler Command Pro 23 idle surge. #9. There is an aerosol version of seafoam, called Deep Creep. You spray it in the intake with engine running, even to the point of killing the engine. Come back later and restart engine, and get rid of all the insects in the area.Kohler is a popular engine manufacturer, but like any brand, it has its share of problems. One common issue with Kohler engines is fuel pump problems. Fuel pumps are designed to deliver a consistent flow of fuel to the engine, but over time they can wear out or become clogged with debris. This can cause the engine to run rough or even stall.Jan 2, 2021 ... My Troy Bilt riding mower engine was surging while running and this is how I fixed the problem. How to remove and clean a Briggs & Stratton ...23 posts · Joined 2003. #1 · May 29, 2003. Hello! I have a Scag 52" with a 18 HP Kohler Command. The first time I've had a problem with it was today, it died while cutting. I had to choke it to get it started and it would only stay running under full choke. I pulled the carb and found no dirt, but thoroughly cleaned and blew it out.I have a cub cadet zero turn with a kohler 7000 series engine that surges. I have replaced carburetor, fuel filter , spark plugs with all kohler parts. Cleaned the fuel system and direct fed fuel to carburetor. And still same problem. Any ideas? Mechanic's Assistant: Do you know the model of your Kohler engine? How old is it?

The 16 horsepower single cylinder, Kohler engine is commonly found on outdoor power equipment, such as generators and lawn tractors. The carburetor is responsible for mixing the fuel and oxygen going into the engine cylinder. When the mixture becomes too rich or too lean, the carburetor needs adjustment.Past 7 Days: 23. Past 30 Days: 104. All Time: 4,397. Adam Schaeffer that sounds more like an issue with either the valvetrain or the piston (rings etc.)Craftsman used 3 different Kohler engines on this model. Kohler Command Single CV490S-27508 and CV492S-27506 as well as Kohler Courage SV490-0004 We’d need to know the exact engine used on ...23 posts · Joined 2003. #1 · May 29, 2003. Hello! I have a Scag 52" with a 18 HP Kohler Command. The first time I've had a problem with it was today, it died while cutting. I had to choke it to get it started and it would only stay running under full choke. I pulled the carb and found no dirt, but thoroughly cleaned and blew it out.Fuel Flow: Make sure fuel is reaching the engine. If not, clean or replace the fuel filter. Check Starter: If you hear a clicking noise but nothing else, your starter might be the issue. A quick repair or replacement usually does the trick. 2. Kohler 7000 series carburetor problems. Carburetor troubles in a Kohler 7000 series can damage your ...Bobcat 250NT low idle. 03-23-2013, 06:07 PM. Hello. I purchased a Miller Bobcat 250NT with the Kohler engine, new about five years ago. After putting about six hours on the unit I put it into short-term storage and forgot about it for nearly five years. I pulled it out of storage and obviously the fuel had gone bad.V12-Engine. Mike_Sappington (Mike Sappington) May 25, 2001, 1:40pm 1. Hi. I just rebuilt my distributor (seized vacuum advance), new plugs and reset. the timing. I am now experiencing idle surging. When the car is cold, she starts right up and idles around 1000 rpm ( a. little high).

Dixon ZTR mower with Kohler Command Pro 20 engine. I have a problem with engine surging and cutting off. Have replaced carb, in-line fuel filter, fuel pump, cleaned fuel tank, replaced plugs - nothing …Bobcat 250NT low idle. 03-23-2013, 06:07 PM. Hello. I purchased a Miller Bobcat 250NT with the Kohler engine, new about five years ago. After putting about six hours on the unit I put it into short-term storage and forgot about it for nearly five years. I pulled it out of storage and obviously the fuel had gone bad.15. Oct 2, 2014 / 26 HP Kohler Courage on Craftsman DGS 6500, intermittent surging. #1. I recently bought this tractor used and since getting it home it has surged or lost power (with a gas smell when it loses power) and then surged back to full power. It happens both when mower is engaged and not.Removed the bowl & needle. Then sprayed a couple of squirts of carb cleaner in the fuel inlet, then back the other way. Then the same with the sea foam spray (top engine cleaner and lube) Then up the main nozzle. Put all that back together and still getting a surge at low idle and a little backfire through the carb.

Jennifer hammond married.

The main fuel adjustment is the screw on top of the carburetor. Turn it counterclockwise a quarter of a turn and see if that helps. If not, go another quarter. If you don't get any response from that, then gently turn the screw clockwise until it stops, making note of the # of turns.Loosen the spark plug wires, and with engine idling, remove one plug wire at a time, if engine dies when either wire is removed, the opposite cylinder is not firing. If one cylinder is not firing, it will cause the surging. Check cylinder for spark, with Kholer, it can be a bad coil. Kohler recommends replacing both coils , if one is bad.Location: USA. Outdoor Gasoline and Electric Powered Equipment and Small Engines - Kohler Courage SV591 surging and backfiring - It is on a cub cadet LTX1040. 19.0 HP Starts fine then surges and backfires. Removed carb and placed it in ultrasonic cleaneer through four cycles then blew it out with air.Use the wire from a bread tie to gently clean the inside diameter of the main jet and idle jet. If replacement parts are needed, make sure you write down the numbers from the engine so your dealer can …A new to me 302 with a Kohler engine. S/N MA150366H, has a couple of issues, firstly it will not idle up when the switch is turned to the run position, it stays at a low idle. The engine runs fine, if I pull the ground wire off the idle solenoid the engine runs at a high idle fine, there is a steady voltage to the coil whichever switch position.

Most of us have more devices than we have plugs in the wall, which is why you’ll likely find a surge protector behind most people’s televisions and under our desks. However, not al...B. B-Man Discussion starter. 18 posts · Joined 2018. #1 · Apr 16, 2018. I have a John deere STX38 with a Kohler command cv14. it was gutless so i followed the service manual and readjusted the throttle then set the RPM to 3600 with my tacho using the speed control bracket. it was sitting at 3000. Now the thing just wants to surge under no ...The common problems of the Kohler Courage 26 HP engine include low power, surging, starter motor failure, no spark, and overheating. The engine can also have carburetor failure, rough running, and oil leakage issues. To fix Kohler Courage 26 Hp Engine Problems, here are the at-home solutions below: Clean the fuel system.Going to try the TPS relearn when I get a chance. If necessary will try the ECU reset. Apparently a lot of problems can be solved by an ECU reset, which causes the motor to re-learn a lot of the sensor inputs. Motor could be running a bit lean, which the ECU reset will fix. In fact the problem could be that the ECU is still running as it was ...Mar 18, 2018 · It has a Kohler CV-15 single cylinder engine. Last fall it started running lousy and surging, then I couldn't get it to start a few weeks ago. I planned to clean and rebuild the carb, but found a brand new carb for $5 more than a rebuilt kit, and installed that yesterday. Got it started and it runs great but still surges. Messages. 10,260. Oct 13, 2021 / Kohler KT740-3011, running rich and rpm surging. #4. First verify you got the OEM 16 853 19-S carburetor as these are non adjustable other than the idle speed. Also make sure the choke is fully opening. IF you got a clone carburetor then it very well could be the problem. B.The common problems of the Kohler Courage 26 HP engine include low power, surging, starter motor failure, no spark, and overheating. The engine can also have carburetor failure, rough running, and oil leakage issues. To fix Kohler Courage 26 Hp Engine Problems, here are the at-home solutions below: Clean the fuel system.56 posts · Joined 2008. #1 · Mar 26, 2010. I just bought a new 07/08 exmark 23/52 lazer hp. Last of the "old style" pumps and hoses. This kohler surges until warmed up, about 5-10 minutes. Dealer says it is normal, I say bull. I have an older hp, same machine with 1300 hrs. and no issues. He put a new carb on it but it still does it.Thank you for watching!! If we helped you out and you want to show your support - LIKE, SUBSCRIBE or give us a shout out below. If you saw something you didn...4,710. Jun 28, 2021 / Engine surges after starting and eventually stalls. #2. Dirty carb. Clean the entire fuel system, tank to carb. Having to choking the carb means the engine is starving for fuel. Carb is dirty or something is restricting fuel flow to carb. Verify carb solenoid is working. Open fuel cap when it surges.

With this setup the engine is always "riding" on the governor, even at idle. That's supposed to give the governor a snappier response when you go to WOT and lower the amount of RPM "droop". The side benefit of these setups is that you can drive the machine around at idle without stalling the engine because the governor is engaged.

Apr 4, 2023 · It violently surges at full throttle. Runs fine at idle and mid-throttle. I have done all I know, and now am stuck. I recently purchased a used 1997 Craftsman GT, 917.258921, with a 25hp Kohler Command Twin, hydrostatic drive, and 50" deck. Engine is CV25S, Spec: 69511, Serial: 2633205137. However, if there are any leaks, the engine can draw in outside air that hasn’t had fuel added to it, leaning out the mixture. Start by tightening all the bolts around the carburetor: these can work loose after being subjected to engine vibration, letting the carburetor separate from the head. If the engine is still surging, inspect the ...Here is the procedure if you need it; With the throttle control at idle or stop position (not running) push the governor arm to where the carb. throttle shaft is at wide open position. Pay attention to which way the governor shaft the arm is attached to rotates. Now loosen the arm retaining screw and while holding wide open grab the end of the ...I been cutting for 30+years and have had the vanguard on several walk behinds one had over 5000 hrs before it dropped a valve that went through the case and did not stop running it was a 16hp 2 cylinder and had a couple of Kohlers fuel injected go over 3000 hrs and still running have had some bad luck with kawasakiRemember to follow all safety precautions before starting any work on your engine. If troubles persist after checking the possible causes listed or you are unable to identify the problem, call KOHLER Engines Customer Service at 1-800-544-2444 or contact your local KOHLER dealer.However, if there are any leaks, the engine can draw in outside air that hasn’t had fuel added to it, leaning out the mixture. Start by tightening all the bolts around the carburetor: these can work loose after being subjected to engine vibration, letting the carburetor separate from the head. If the engine is still surging, inspect the ...May 14, 2014 at 18:21. 1. The carburetor has two circuits, a main power circuit and an idle circuit. When the idle circuit gets partially clogged, the governor will drop the throttle shut, the engine partially dies and the governor yanks the throttle back open till the main kicks in. If the idle circuit gets completely clogged, the engine will ...surging kohler 16hp tractor engine. I have a Kohler K341 16 horse cast iron engine on a Allis 716 tractor. I have replace the points, plug, condensor, fuel filter and put on a brand new carb. The tractor surges no matter what I do with the carb adjustments. I have verified points gap is correct.Drain old gas from the tank. Use a siphon if you have one - and save spills on the engine and floor. Add a fuel stabilizer to the gas tank (manufacturer's recommended mix ratio) and top it with a full gas tank. Run the engine for 2 minutes to circulate the fresh gas. Check for mower engine surging.Every time i turn off my Kohler engine, it backfires. That is pretty annoying.After it's turned off, there must be a lot of gasoline leaking into the exhaust...

Greenwood ms sheriff department.

Chewy lewisberry pa.

Carbon monoxide is an odorless, colorless, tasteless, nonirritating gas that can cause death if inhaled for even a short time. Carbon monoxide poisoning symptoms include but are not limited to the following: Light-headedness, dizziness. Physical fatigue, weakness in joints and muscles.The engine will often run fine at idle, but will die when it is throttled up. This is because there is less air moving through the engine at idle. When the engine is run at full throttle, especially under load, the air flow is much greater, which causes more back pressure, and results in the engine stalling.Showing how I fixed the surging engine on a 24hp Husqvarna gt52xlsi lawn tractor, basically these seem to all have bad o rings on the two jets and replacing ...Engines ; Kohler k181 8hp Surging Sometimes Sign in to follow this . Followers 3. Kohler k181 8hp Surging Sometimes. By 71_Bronco, June 16, 2019 in Engines. ... With the load off the engine, it would surge. Once I turned back onto the grass and put the load back onto the engine, it smoothed out.I hope one of you fine folks have a suggestion or two for me. I was given a cub cadet ltx1050 tractor with a sv730 Kohler engine. Its 4 years old and has 82 hours on it. A head gasket was blown, so I replace them both. The mower sat for one season. Prior to and post repair, the engine revs up and down at an idle. On WOT, seems to run smooth.The engine is running a Cub Cadet 149. It starts immediately, no matter what. It will chug along so slow you can nearly count each time it fires, and it will run wide open and lug down the thickest grass without sweating. However, if the engine is sitting still with nothing to do, it will surge at full throttle.One of the most common issues with a 22 HP Kohler engine is carburetor problems. To fix these issues, start by rebuilding the carburetor. This involves disassembling the carburetor, cleaning all the parts, and replacing any worn-out components. The next step is to clean the main jet assembly in the carburetor.I HAVE A 2006 54 INCH GARDEN TRACTOR WITH A KOHLER 26HP COURAGE ENGINE. ENGINE SURGES IN IDLE. NO POWER GOING UP SLIGHT HILL, SLOWS DOWN ,ALL MOST DIES. ADDED SEAFOAM TO THE GAS TANK. ... I have a Husqvarna riding mower with a Kohler CV15S engine, spec #41597, ser# (XXX) XXX-XXXX. While trying to start it, a large amount of fuel comes out of ...Follow us on to find the latest updates on our products. HELP. ContactI'd say all you need to do is run it yourself, for 2 or three hours, and if ya like it buy it and readjust the carb if you have a manual it'll show ya how, or rebuild it. 1993 Honda 300. Seafoam "In every tank". Mobil1 4T 10w-40 (great stuff) Superwinch Terra 35/synthetic rope, !/4 inch plate winch mount.Consumer discretionary stocks including restaurants, entertainment, and the biggest US technology companies are leading the surge in options volumes. Jump to As stocks continue to ...246. 15K views 7 months ago. Hi all! In today's video, I will be fixing this zero turn mower that surges very badly. I will walk through how to fix it and what to do. I am … ….

The engine can also have carburetor failure, rough running, and oil leakage issues. To fix Kohler Courage 26 Hp Engine Problems, here are the at-home solutions below: Clean the fuel system. Change the defective fuel pump. Replace faulty brushes and solenoids of the starter motor. Restore or change the magneto. Clean the air filter and radiator.Kohler Magnum twin carb and governor settings. As many of you are aware, I run my Kohler M18 at 3600 RPM as per Kohler specs, and a number of you have followed my lead in speeding up your Kohlers to take full advantage of the designed RPM/HP of these engines. New information has come to light regarding the governor and speed settings which may ...12. Messages. 164. May 8, 2015 / Kohler CV730 surging problem, dies under load. #1. At idle the engine slows down and picks up (surges). Full throttle there is an intermittent miss, and does not feel as strong as a 26hp twin should. If blades are engaged fuel spray coughs out the carburetor and it chugs down and dies.John Deere engine surging is a result of an inconsistent combustion process in the engine cylinder (s). More specifically, it is caused by inconsistent delivery of fuel and/or oxygen to the combustion chamber. The usual problems lie in the air filter, gas cap, fuel lines, or carburetor. As you know, for an engine to fire and produce power, it ...Hi i am really getting stuck on this one and i hope someone can help me out. I have a 22 hp kohler engine on a craftsman garden tractor. it surges, bad. now here is where i am getting confused. the engine runs fine if it is running on the left cylindar, or the right sylindar. but when you have spark going to both cylindars the surging starts. i have replaced all fuel lines, fuel filters, spark ...As the title says, the engine-Kohler 18hp on my 2000 model year 3184 is surging and then dying at low idle when it warms up after a few minutes. I previously changed the plugs (gapped correctly), engine oil/filter, tranny oil/filter, air filter and the in line fuel filter. spark plug wires are fine, cooling fins are clear/clean, the engine ...Kohler Courage, 21 HP, 597CC, Carburetor replaced due to failure to shut off fuel flow. Now engine surges, governor won't stabilize at any throttle setting. Starts, runs, develops power fine … read moreHow to repair an engine carburetor that surges, hunts, pulses or waffles. In this video, we'll show you how to fix a surging engine on a lawn mower, pressur... Kohler engine surging at idle, If I hold the linkage steady with a finger, there is no surging and the engine is smooth. So that suggests to me that the surging is not due to a fuel/load problem that …, Aug 9, 2020 ... A HOW-TO video on how to fix a surging Lawn Mower Engine. Mine is a 17.5 HP Briggs & Stratton in a Troy-Bilt- Pony lawn tractor, ..., Learn my quick tip on how to fix a surging generator. this is not 100% going to work all the time but it dont take much time to check if this quick tips stop..., Here I fix my engine surging problem on my Husqvarna Lawn tractor., Messages. 10,260. Oct 13, 2021 / Kohler KT740-3011, running rich and rpm surging. #4. First verify you got the OEM 16 853 19-S carburetor as these are non adjustable other than the idle speed. Also make sure the choke is fully opening. IF you got a clone carburetor then it very well could be the problem. B., Inspect the vent on your gas tank's cap and clean it if it's dirty. Drain the gas tank, clean the gas bowl, and add a fresh batch of fuel. Or you can inject fuel cleaner to clean the fuel line. After changing the fuel or injecting fuel cleaner run the lawn mower as usual. Caution: Make sure the fuel is below the maximum gauge level., A new to me 302 with a Kohler engine. S/N MA150366H, has a couple of issues, firstly it will not idle up when the switch is turned to the run position, it stays at a low idle. The engine runs fine, if I pull the ground wire off the idle solenoid the engine runs at a high idle fine, there is a steady voltage to the coil whichever switch position., Have a 20 hp Kohler v twin that is surging bad. Smoothes out with choke pulled 1/4 way out. Brand new carb, checked both coils with testers and there both good. All gaskets are brand new. Not sure what to do. The 1st place to look would be debris in the "idle circuit", in the carb., Here are some additional tips for troubleshooting a Kohler engine that is running then dying: If you have recently filled up the fuel tank, try draining the tank and refilling it with fresh fuel. Old fuel can cause engine problems. If the engine is running hot, try letting it cool down before starting it again., How to repair an engine carburetor that surges, hunts, pulses or waffles. In this video, we'll show you how to fix a surging engine on a lawn mower, pressur..., Oct 20, 2021 · Learn my quick tip on how to fix a surging generator. this is not 100% going to work all the time but it dont take much time to check if this quick tips stop... , Kohler engine surging. I took out dad's Gravely from winter storage, sharpened the blade and started cutting grass. It was running smooth, then about 5 minutes in, the rpm started surging. It idles just fine. It surges anywhere above idle. If I hold the throttle on the carb, the engine smooths out and just hums., By watching this video, you will see the fix to my surging motor. I believe this could be your issue if you have one of these courage motors on your mower., Inspect the vent on your gas tank's cap and clean it if it's dirty. Drain the gas tank, clean the gas bowl, and add a fresh batch of fuel. Or you can inject fuel cleaner to clean the fuel line. After changing the fuel or injecting fuel cleaner run the lawn mower as usual. Caution: Make sure the fuel is below the maximum gauge level., Feb 18, 2018 / 22hp V-twin STILL surging. Help! #2. that type of surge is normally associated with the idle circuit in the carb. Even though the engine runs at full throttle, you are still running on the idle circuit unless the engine is under load. those passages are normally in the area at or in front of the throttle butterfly if you are ..., The engine will often run fine at idle, but will die when it is throttled up. This is because there is less air moving through the engine at idle. When the engine is run at full throttle, especially under load, the air flow is much greater, which causes more back pressure, and results in the engine stalling., This is a late 90's model Scott's lawn tractor with a Kohler engine. After sitting a few years, it would start and run, but needed a little TLC to resolve th..., 50571 posts · Joined 2011. #1 · Jun 7, 2016. I posted some of this in the good morning thread. Dieselshadow suggested I post up a thread about it. I agree. The engine is on our 2014 ZTrak Z915B ZTR. Approximately 100 hours on it. The issue was surging at WOT with no load. I took the carburetor off 4 or 5 times looking for dirt and cleaning it., Hi folks new to the group here. I've got a Kohler sv601 vertical shaft engine that was surging. I did a carburetor cleaning and new plug new coil and now I cannot get it to keep a high idle. I did the adjustment as per the manual for the governor but still once I engage the blades, the RPMs come..., Each one of these seven cheap large-cap stocks to buy could make a strong recovery, once external worries clear up. Each one of these cheap large-cap stocks could make a strong rec..., '06 Exmark TT 60" Kohler 20hp '06 Exmark TT 60" Kawasaki 22hp ... set the idle screw too low , and it would surge down and almost die before coming back up ... a common problem that causes engine surging is dirt ingested into air jets. these are usually found in the carb throat behind choke plate. blow thru the jets with carb cleaner.these jets ..., Kohler 25hp engine hunts/surges under load. Tach install ideas. « on: February 17, 2020, 08:59:06 PM ». Hey Guys/Gals, Mill is running not so great. Engine doesn't seem to be coming up to regular high speed when the blade is engaged, and it hunts/surges a little in the cut. Only talking small logs...6-9". Tried a fresh tank of non ethanal ..., The 27 HP Kohler engine is a reliable and powerful choice for use in a variety of small engines, including lawn mowers. However, like any engine, it is prone to experiencing problems from time to time. Some common issues that have been reported with the 27 HP Kohler engine include surging, missing, and backfiring. In this blog, we will explore ..., Command PRO. CH26. Find A Dealer. You work your tail off 12+ hours a day. It's time to hold your engine to the same standard. With extended maintenance intervals and fuel-efficient operation, KOHLER Command PRO engines work as hard as you do., on craftsman garden tractor with kohler SV735-0016 engine the engine runs great from idle to full speed. the problem is when you start to cut grass. starts off good then loss of power. the engine does ... I HAVE A 2006 54 INCH GARDEN TRACTOR WITH A KOHLER 26HP COURAGE ENGINE. ENGINE SURGES IN IDLE. NO POWER GOING UP SLIGHT HILL, SLOWS DOWN ,ALL ..., Here is the procedure if you need it; With the throttle control at idle or stop position (not running) push the governor arm to where the carb. throttle shaft is at wide open position. Pay attention to which way the governor shaft the arm is attached to rotates. Now loosen the arm retaining screw and while holding wide open grab the end of the ..., John Deere engine surging is a result of an inconsistent combustion process in the engine cylinder (s). More specifically, it is caused by inconsistent delivery of fuel and/or oxygen to the combustion chamber. The usual problems lie in the air filter, gas cap, fuel lines, or carburetor. As you know, for an engine to fire and produce power, it ... , Remember to follow all safety precautions before starting any work on your engine. If troubles persist after checking the possible causes listed or you are unable to identify the problem, call KOHLER Engines Customer Service at 1-800-544-2444 or contact your local KOHLER dealer. , Download the Android App from the Google Play Store. Android Application User's Guide. Kohler Engine University. Bluetooth. Android Bluetooth Pairing Issues. iOS Application, CAN Engine, and a new Kohler Bluetooth Diagnostic Interface Module. Hardware. iOS Application, CAN Engine, and a new Kohler Bluetooth Diagnostic Interface Module ..., 6,973. Aug 28, 2014 / Kohler engine surging. #4. 93 octane does not mean clean gas. Also the outside of the carb and governor gets missed. You need to clean everything inside and out with carb cleaner and compressed air if you have it. Tiny holes get dirt i them in the carb., Based on the KOHLER Command PRO® commercial engine design, the air-cooled, V-time 7000 Series will run rings around your neighbors. It features a 3 year, unlimited hour, limited warranty. Specs. Features. Engine Uses. Technical Documents. Parts & Warranty. Follow us on to find the latest updates on our products. HELP. Contact ., Kohler CV740 - Engine speed surges. My Super Z with 87 hrs has just started to have an engine speed that surges constantly when it is not under any type of load. The engine will not idle at the normal low speed as it did when new but it will idle at higher speeds as long as it can surge. I do not believe the governor sensitivity …, Kohler CV740 - Engine speed surges. My Super Z with 87 hrs has just started to have an engine speed that surges constantly when it is not under any type of load. The engine will not idle at the normal low speed as it did when new but it will idle at higher speeds as long as it can surge. I do not believe the governor sensitivity …